Dunitz 1685 hosted annotations (#1789)

* save tiledb array to s3, dont cache user annotations

* Add option to disable annotation filename prompt (#1787)

Co-authored-by: Madison Dunitz <dunitzm@gmail.com>

* set tiledb default context in cxg_adaptor

Co-authored-by: maniarathi <arathi.mani@chanzuckerberg.com>
Co-authored-by: Severiano Badajoz <sbadajoz@chanzuckerberg.com>

server/data_cxg/cxg_adaptor.py

@@ -51,8 +51,14 @@ class CxgAdaptor(DataAdaptor):
         """Set the tiledb context.  This should be set before any instances of CxgAdaptor are created"""
         try:
             CxgAdaptor.tiledb_ctx = tiledb.Ctx(context_params)
+            tiledb.default_ctx(context_params)
+
         except tiledb.libtiledb.TileDBError as e:
-            raise ConfigurationError(f"Invalid tiledb context: {str(e)}")
+            if e.message == "Global context already initialized!":
+                if tiledb.default_ctx().config().dict() != CxgAdaptor.tiledb_ctx.config().dict():
+                    raise ConfigurationError("Cannot change tiledb configuration once it is set")
+            else:
+                raise ConfigurationError(f"Invalid tiledb context: {str(e)}")
 
     @staticmethod
     def pre_load_validation(data_locator):